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NOTICE: This version of the NSF Unidata web site (archive.unidata.ucar.edu) is no longer being updated.
Current content can be found at unidata.ucar.edu.
To learn about what's going on, see About the Archive Site.
Hi all, Could this have something to do with "gamma correction" in the hardware/software? In the past we have found odd behaviour with various hardware/software combinations where gamma corrections were sometimes being applied by software and again by hardware in some configurations and not at all in others. The brightness for an image can vary depending on whether a image is mapped directly to display pixels, used to texture map a solid, whether lighting is enabled or not in hardware etc. Some cards seem to do gamma correction with 3D acceleration but not for 2D windows, etc. Sorry I couldn't give any more insight but it may be worth looking into. Tim. "From: Bill Hibbard " wrote: > > > Hi, I managed to display the 3D graph with RGB mapping. But the RGB > > mapping is not bright enough to view. How should I increase the > > intensity or the colours? Thanks. > > Do you mean that it is not visible at all? > > If it is just dim, there is something strange going on > inside Java3D. If you run Test51 in the visad/examples > directory, you will see that the original Java3D image is > dimmer than a BufferedImage captured from the Java3D Canvas. > It is hard for to understand how the origianl can be dimmer > than a copy. I am not sure how to address this. > > Cheers, > Bill > ---------------------------------------------------------- > Bill Hibbard, SSEC, 1225 W. Dayton St., Madison, WI 53706 > hibbard@xxxxxxxxxxxxxxxxx 608-263-4427 fax: 608-263-6738 > http://www.ssec.wisc.edu/~billh/vis.html -- Tim Stevenson Surpac Software International 162A Roslyn Avenue, Blackmans Bay, Tasmania, Australia 7052 Phone/Fax: +61 3 62294610 Home Phone: +61 3 62298866 Email: tims@xxxxxxxxxx
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